Locking mechanism for car-vestibule trap door



Nav. 2 192e.`

A. A. cQNsTANrlNE LOCKNG MECHANISM FOR CAR VESTIBULE TRAP DOORS FiledJuly 21I 1925 Patented Nov. 2, 1926.

parte!) STATES PATENT. 'ermee ALFHONSE A. CNSTANTINE, OF JEFFERSONVILLE,NDIANA, ASSIGNOR TO AMERI- CAN CAR AND FOUNDRY COMPANY, GF

NEVI' JERSEY.

NEW YORK, Y., A COREORATION OF Application led July 21,

ln the drawings Y Fig. 1 is a partial vertical section of car vestibuleshowing a trap door equipped with trap door lock constructed inaccordance with this invention, the door being shown in closedyposition;

Fig. 2 is a vertical section of the trap door lock of Fig. 1 taken onthe line 2-2of Fig. 3 and showing the lock in door-locking position; Y

Fig. 3 is a horizontal section taken on the. line 3-3 of Fig. 2;

\ Fig. 4 is a vertical section takenon the line 4-4 of Fig. Sand showingthe lock in the door releasing and starting position; and Fig. 5 is afragmentary section taken on theline 5-5 of Fig. 1 showing a means foroperating the lock from Without the car.'

This invention relatesV toV locking Vmeans for the trap doors ofcarvestibules and it is an objectof this invention 4to provide'animproved mechanism of the Yclass described in which a sliding lockingbolt, spring pressed to the locking position, carries a door liftingmeans which initiates the opening of the door, the door lifting meansbeing shielded by the locking bolt when the bolt is in the doorlockingposition and operated by the movement of the bolt to the door releas- 0ing position. It is also an object of this invention to provide animproved operating means for the 'slidingv bolt of a locking mechanismof the class described.

In the drawings the improved locking S5 mechanism 1 is shown applied toplatform v end sill 2 of a car vestibule so as to engage the edge 3 ofthevestibule trap door 4, the trap door being operated by a dooroperating mechanism 5 such as is shown in m co- '20 pending application,Serial No. 45,092 tiled 'July 21, 1925.

The door locking mechanism 1 serves to retain the door in its-closedposition in engagement with the'door stop and rest 6, the `=5 door beingheld in its open position by door .holding mechanism such asis shown inmy V(1o-pending applicationSerial No. 45,091 flied July 2i, 1925.

The door locking `mechanism 1 Vcomprises o a easingV or housing '10having side Walls 12 provided with outwardly projecting anges 14 bymeans of Which screws or other fasteningmeans 16' secure the casing-lOto`the platform end sill 2. 'The "Walls"v 12 of the 1925. Serial N0.45,090.

housing 10 are thicker at the bottom to provide inwardly projectingshoulders 18 Which serve as guides or slides for the irregularly shapedbolt 2O Which' rests on the shoulders 18 andprojects throughan openingat one end of the casing. The bolt 20 is formed ivithrzspaced parallelside Walls 22 and 24 Which are joined at their outer ends ,by a

Vcurved end Wall 26. The side Wall 22 is provided With an inwardlyextending projection 28 carrying la boss 30 which serves to Vpositionone end of a spring 32 conined between the projection 28 and the endWall `3.4r of the housing 10, vthe other end of the spring 32 beingpositioned by a boss 36 formed integral With the end Wall 34. rllhe sideWall` 24 is providedwvith van inwardly extending projection 38 whichisengaged `by an arm 40ofa bell crank lever 41 .pivotally mounted on apin 42 carried `by the side -Walls 121foffthe housing 10. The other arman arm 46 of an irregularly shaped lever 47 pivotally, mounted on a pin48-carried by ing 58 in the platform end sill and has its other endpivotally connected to an operating lever 60 having one end pivotallysecured `to a bracket 62 carried by the angle 64.

Mounted in the side Walls 22 Aand24 of the bolt 2O is a pin 66 uponWhich is pivotally mounted a lever 68 having its free end curvedoutwardly as |at 70. When the bolt 20`is in locking position thelever/70 extends between .the outer edge 3 of the door 4 and the edge ofthe door opening andprojects into an opening ,72.A formed in the doorstop and support 6, the curved outer end 70 projecting Yslightly beneaththe edge "3V of the door.

' .When the door: locked in closed position, the locking mechanism willbe in the position shown in Fig. 2 with the bolt 20 held over the outeredge 3Y of thedoor by theA spiing32 and Withthe lever GSVeXtendingrfintothe"` opening :'72 and beneath the edge 3 of the door. To Withdraw thebolt 20, the bolt will beoperated'either by operating theleve 60 or' theoperating arm 50,

v44 of the bell crank lever 41 is engaged by Il O Iii

5. In sliding` bolt, a door actuating means carried by" said'bolt'andmeansoperating said ydoor .Qpeningi -m'ea'ns to"r open'the e doorupon retraction otsaidbolt which will cause the arm 46 to operate thebell cranlr lever 4l, which due to engagement ot its arm 40 withprojection 38 on the bolt Q0 will retract the bolt from above the edgeoi' the door when either Vthe lever 60 or the arm 50 is presseddownwardly. Movement of the bolt 20 inwardly of the casing l0 will bringthe lever 68 into Contact with the curved cross piece 8O which connectsthe side walls 12 ot the housing at the bottom and lies substantiallyflush with the edge of the door opening. Engagement of the'lever 68 withthe cross piece f8() will force the tree end of the lever 68 upwardlyinto engagement with the outer edge 3 ofthe door'as the bolt 2O is movedinto the housing 10 so that as the 'bolt is `retracted the outer edge3"'of `thelidooi" will'ib'e forced upwardly by the end of the fleverV68. Releasing-theopen ating liever 60 or the arrii 50 'after.th'ev-door is raised will permit the spring 32`to .force the v.boltoutwardly whereupon' rthe .leverv 68 willdrop 'into the opening Qin thedoor stop 6. Dropping the door vto its'closed position will cause theIouter'edge S'ot the door to engage 'the curved outer face 26 otthei'bol'tQOwhereupon the bolt will bel forced back suliiciently topermit the door to engage with the 'stop 6V whereupon the spring 32'will :torce the bolt 2O outwardly into door `lockingposition. y

It will beI noted that the outward movement of the bolt 2O islimitedbyythe engagement'of the arm 50 with the front wall of the opening 52 andthat the lever 68 is mounted so as to be protected by the sideA walls 22and 24 and the end wall 26 ofthe bolt.

What is claimed is:

l. In a trap door lock-ingmechanism, a door locking means and a`f"dooractuating means inovably `mounted on f s'aid locking means.

2. In a trap door loclringfmechanism, va door lockingV means and a dooractuating meaiispivotally mounted on 4said door locking means.

In a trap door locking mechanism, a door lockinmeans and aldooractuating means movaoly mounted Von vsaid locking means and operatedbymovementof said door locking means.

4. In'a trap doorlocking mechanisima door'i'lockingmeans and a door`actuating means pivotally mounted on 4saiddoor locking means andoperated by movementvvf said door locking`m'eans to i door releasingposition. f`

a trap door -loclring fmechanisni, a

6.- Iin a ti-apA doorA lackingV -mechani`sm,fla

sliding holt-and ahdoorattuatng .Ineens carried by said bolt, said dooropening means being shielded by said bolt.

7. In a trap door locking mechanism, a sliding bolt and a door actuatingmeans pivotally mounted on said bolt.

8. In a trap door locking mechanism, a sliding bolt, an operating levertor said bolt and a. door actuating means carried by said bolt, saiddoor actuating means being operated by `movement of said bolt.

9. In a trap door locking mechanism, a sliding bolt, an operating leverto retract said bolt, meansyieldingly pressing said bolt outwardly and adoor actuating lever carried by said' bolt and operated by theretraction of said bolt.

l0. In a trap door locking mechanism, a sliding bolt, an operating levertoretract said bolt', and va don'r iactuating lever pivotall-y mounted.onsaidbolt 11. In a trap door locking mechanism, a sliding '-.bdlt',.an operating lever to' retract said bolt and a door actuating leverpivotallymounted on said'bolt, said door vopening leverbeing operatedbythe retraction ot `said bolt.

l2. In a trap doorrlocking mechanism, a sliding bolt, an operating leverto retract said bolt, a door .actuating lever pivotally mounted on saidbolt Aand 'means shielding said'door 'actuating lever carried by saidbolt, said `door opening lever being operated iby the retracting ofsaid' bolt.

13. lIn a trap rdoor looking mechanism, a sliding bolt, a door actuatinglever pivotally mounted onsaid'bolt-andV a lined abutment engaging saidleverupon retraction or said bolt. i i

I4..In a trap door locking mechanism, a bolt, a dooruactuating levercarried by said boltandan abutment operatively engaging .saidlever uponmovement Vot said bolt.

115. Inla Atrap doorlodring. mechanism, Va sliding bolt,iadoorac'tuatinglever pivot- .ally mounted on said bolt, 4yielding meanspressing said bolt outwardly, an operating 'lever lttor saidboltandmeans for operating saidoperatin'gy lever.

16. In a trap door locking mechanism, a sliding bolt, a dooractuatinglever pivotally Vni'o'vur'itedon said bolt, yielding means pressing saidbolt outwardly and operating means to retract` said .bolt,.said boltshielding` said door actuating lever.

I17; In ai trapdoor locking mechanism, a hoi'ising, a `bolt slidablyVmounted in said housing, a bell crank lever within said lliofusing.andAoperative'ly .connected to said bolt and a lever.pivotallyfmountedinsaid .housing-.and having-.an arm operativelyen- .gaging said bell.crank lever and an .arm .rogcting'hthrough' l'opem'ng A.in 'saidousing'. n. lElLJInLatta door lockingmechanisima housing, a bell cranklever mounted Within said housing and operatively connected to said boltand a lever operatively connected to said bell crank lever and operablefrom both sides of the trap door.

19. In a trap dooi` locking mechanism, a housing, a bolt slidablymounted in said housing, a bell crank lever operatively connected tosaid bolt and an operating lever mounted in said housing and operativelyconnected to said bell crank lever.

20. In a trap door locking mechanism, a housing, a locking bolt mountedin said housing, a bell crank lever operatively connected to said bolt,an operating lever mounted in said housing and operatively connected tosaid bell crank lever and yielding means engaging said bolt and housing.

2l. In a trap door locking mechanism, a housing, a locking` bolt mountedin said housing, a bell crank lever operatively connected to said bolt,an operating lever mounted in said housing and operatively connected tosaid bell crank lever and door actuating means carried by said bolt.

In Witness whereof I have hereunto set my hand.

ALPHONSE A. CONSTANTINE.

